The Leon Redbone show originally scheduled for March 27 at the Iron Horse has been moved to Nov. 13. Tickets purchased for the original date will be honored. Tickets are available for the new date for $25 in advance through the Northampton Box Office at (413) 586-8686 or online at iheg.com

Celtic Thunder appears at the MGM Grand Theater at Foxwoods on Sept. 29. Tickets for the event are $55 and $35 and go on sale Friday, June 17 at 10 a.m. through the MGM Grand Box Office at (866) 646-0609 and online at mgmatfoxwoods.com.

Foxwoods has lined up a summer concert series called “Free Tunes Tuesdays” which kicks off on June 21 with Gloria Gaynor and Sister Sledge at the MGM Grand Theaters. The concerts are free for Dream Card holders (registration is free at foxwoods.com) and begin at 7 p.m. Other highlights of the weekly schedule include Blue Oyster Cult and Foghat (July 5), The Bacon Brothers Band (Aug. 9) and the Spin Doctors on Aug. 23.

The Lettermen have an Aug. 14 date at the Infinity Hall in Norfolk, CT. Tickets for the concert are priced at $65 and $45 and are on sale today through infinityhall.com. Tickets are also on sale today for Cheryl Wheeler (Sept. 30) and John Oates, one half of the famed Hall & Oates duo, who plays the room on Oct. 5.

Katy Perry plays the XL Center in Hartford on Nov. 15. Tickets for the concert go on sale Friday, June 17 at 10 a.m. through all Ticketmaster outlets and locations including ticketmaster.com and by phone at (800) 745-3000. Tickets are priced at $47.50 and $37.50. Perry plays this Saturday night at the TD Garden in Boston and has a June 25 date scheduled at Mohegan Sun.

Toby Keith’s tour hits the Comcast Theatre in Hartford on Sept. 16 with tickets going on sale Friday, June 17 at 10 a.m. through all Ticketmaster outlets and locations. Eric Church will open the show. Tickets are priced between $20 and $84.25. The show also hits the Comcast Center in Mansfield, Ma on Sept. 17 with tickets for that show going on sale Saturday at 10 a.m.